Your wife says she is not feeling vaginal touch during penetration but you differ Is it the reason for not getting pregnancy?

Don't quite understand the question - your wife feels what she feels, and what you think she should be feeling doesn't matter.

But sensation doesn't have much to do with getting pregnant either. To get pregnant, healthy sperm has to meet a healthy egg inside a healthy woman, and that can only happen a few days out of each menstrual cycle.

There are plenty of things that can make it take awhile to get pregnant, and w/o knowing how long you've been trying it's impossible to know whether you need to be medically checked out, or simply need to keep trying.